title: Repurposing phosphodiesterase-5 inhibitors as chemoadjuvants.
authors.affiliation: Department of Biomedical Sciences, College of Veterinary Medicine, Nursing and Allied Health, Tuskegee University Tuskegee, AL, USA.
authors.forename: Amit K
authors.initials: AK
authors.lastname: Tiwari
authors.forename: Zhe-Sheng
authors.initials: ZS
authors.lastname: Chen